| Item Name | Ring Assembly Electrical Contact |
| Federal Supply Group (FSG) | Electrical and Electronic Equipment Components |
| Federal Supply Class (FSC) | 5977 Electrical Contact Brushes and Electrodes |
| National Item Identification Number (NIIN) | 00-503-9479 (005039479) |
| NCB Code | USA (00) |
| Manufacturer | Arma Div |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABGL | WIDTH | 0.141 INCHES NOMINAL |
| ABHP | OVERALL LENGTH | 1.562 INCHES MAXIMUM |
| ABMZ | DIAMETER | 4.125 INCHES MAXIMUM |
| ADAV | OVERALL DIAMETER | 4.250 INCHES NOMINAL |
| ALGC | MOUNTING CONFIGURATION | FOUR 0.125 IN. DIA MTG HOLES EQUALLY SPACED ON 3.500 IN. DIA BOLT CIRCLE |
| BLKM | CONTACT RING QUANTITY | 4 |
| BLKN | RING SURFACE MATERIAL | BRASS |
| FEAT | SPECIAL FEATURES | TWO METAL RINGS 3.000 IN. MAX ID IN CENTER OF ASSEMBLY INTERCONNECTED TO OUTER COLLECTER RINGS |
| ZZZV | FSC APPLICATION DATA | COMPASS,GYRO |
| Relevant Components for NSN - 5977-00-503-9479, 5977005039479 | ||||
| 5975-01-629-6429 (5975016296429) | 5998-01-305-2341 (5998013052341) | 5930-01-584-0809 (5930015840809) | 5962-01-210-3065 (5962012103065) | |
| 5905-00-175-4284 (5905001754284) | 5950-01-458-0903 (5950014580903) | 5920-01-490-0904 (5920014900904) | 5998-01-475-9891 (5998014759891) | |
| 5995-01-575-7529 (5995015757529) | 5962-01-310-7304 (5962013107304) | 5935-01-240-1468 (5935012401468) | 5995-01-374-0247 (5995013740247) | |
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